P
US10087734B2ExpiredUtilityPatentIndex 92

Method and apparatus for wellbore fluid treatment

Assignee: PACKERS PLUS ENERGY SERV INCPriority: Nov 19, 2001Filed: May 9, 2016Granted: Oct 2, 2018
Est. expiryNov 19, 2021(expired)· nominal 20-yr term from priority
Inventors:FEHR JIMTHEMIG DANIEL JON
E21B 43/00E21B 2200/06E21B 43/14E21B 43/25E21B 33/124E21B 43/267E21B 33/1208E21B 43/164E21B 33/122E21B 34/12E21B 34/10E21B 43/2605E21B 43/27E21B 34/142E21B 34/14E21B 43/26E21B 2034/007
92
PatentIndex Score
7
Cited by
591
References
26
Claims

Abstract

A method for fracturing a formation includes positioning a fluid treatment string in the formation. The fluid treatment string includes a port configured to pass fracturing fluid from within the string's inner bore to outside the string, and a sliding sleeve located inside string and configured to move by fluid pressure within the inner bore of the fluid treatment string between (i) a first position in which the sliding sleeve covers the port and (ii) a second position in which the sliding sleeve exposes the port to the inner bore. The method also includes applying a fluid pressure within the inner bore such that the sliding sleeve moves from the first position to the second position without the sliding sleeve engaging a sealing device, and pumping fracturing fluid through the inner bore and through the port to fracture a portion of the formation.

Claims

exact text as granted — not AI-modified
The invention claimed is: 
     
       1. A method for fracturing a formation, the method comprising:
 positioning a fluid treatment string in the formation, the fluid treatment string comprising:
 a port configured to pass fracturing fluid from within an inner bore of the fluid treatment string to outside the fluid treatment string, and 
 a sliding sleeve located inside the fluid treatment string and configured to move by fluid pressure within the inner bore of the fluid treatment string between (i) a first position in which the sliding sleeve covers the port and (ii) a second position in which the sliding sleeve exposes the port to the inner bore of the fluid treatment string; 
 
 applying a fluid pressure within the inner bore of the fluid treatment string such that the sliding sleeve moves from the first position to the second position without the sliding sleeve engaging a sealing device; and 
 pumping fracturing fluid through the inner bore of the fluid treatment string and through the port to fracture a portion of the formation. 
 
     
     
       2. The method of  claim 1 , wherein the formation comprises a hydrocarbon-containing formation. 
     
     
       3. The method of  claim 1 , wherein the fracturing fluid comprises proppants. 
     
     
       4. The method of  claim 3 , wherein the proppants comprise sand. 
     
     
       5. The method of  claim 3 , wherein the proppants comprise bauxite. 
     
     
       6. The method of  claim 3 , wherein the fluid treatment string comprises a casing string. 
     
     
       7. The method of  claim 3 , wherein the fluid treatment string comprises a tubing string. 
     
     
       8. The method of  claim 3 , wherein the port is the down-hole-most port of the tubing string through which fracturing fluid is pumped. 
     
     
       9. The method of  claim 8 , wherein the port is adjacent a down hole end of the fluid treatment string. 
     
     
       10. The method of  claim 3 , wherein the fluid treatment string further comprises a covering for the port. 
     
     
       11. The method of  claim 3 , further comprising producing fluid from outside the fluid treatment string, through the port, and up hole through the inner bore of the fluid treatment string. 
     
     
       12. The method of  claim 3 , wherein the sliding sleeve comprises a fluid actuated piston. 
     
     
       13. The method of  claim 1 , wherein the fracturing fluid comprises a gel. 
     
     
       14. The method of  claim 1 , wherein the fracturing fluid comprises an acid. 
     
     
       15. A fluid treatment string sub adapted to be connected to a tubing string for hydraulically fracturing a formation, the fluid treatment string sub comprising:
 a port configured to pass fracturing fluid from an inner bore of the fluid treatment string sub to outside the fluid treatment string sub; and 
 a sliding sleeve located inside the fluid treatment string sub and configured to move by fluid pressure within the inner bore of the fluid treatment string, without requiring engagement with a sealing device, between
 (i) a first position in which the sliding sleeve covers the port and 
 (ii) a second position in which the sliding sleeve exposes the port to the inner bore of the fluid treatment string sub, 
 
 wherein the fluid treatment string sub is adjacent a down hole end of the tubing string, and is the down-hole-most fluid treatment string sub of the tubing string that is configured to pass fracturing fluid, the fracturing fluid comprising proppants. 
 
     
     
       16. The fluid treatment string sub of  claim 15 , wherein the formation comprises a hydrocarbon-containing formation. 
     
     
       17. The fluid treatment string sub of  claim 15 , wherein the proppants comprise sand. 
     
     
       18. The fluid treatment string sub of  claim 15 , wherein the proppants comprise bauxite. 
     
     
       19. The fluid treatment string sub of  claim 15 , wherein the fluid treatment string sub is connected to a casing string. 
     
     
       20. The fluid treatment string sub of  claim 15 , wherein the fluid treatment string sub further comprises a covering for the port. 
     
     
       21. The fluid treatment string sub of  claim 15 , wherein the sliding sleeve comprises a fluid actuated piston. 
     
     
       22. The fluid treatment string sub of  claim 15 , wherein the fracturing fluid comprises a gel. 
     
     
       23. The fluid treatment string sub of  claim 15 , wherein the fracturing fluid comprises an acid. 
     
     
       24. A method for fracturing a formation, the method comprising:
 positioning a fluid treatment string in the formation, the fluid treatment string comprising:
 a port configured to pass fracturing fluid from within an inner bore of the fluid treatment string to outside the fluid treatment string, and a sliding sleeve located inside the fluid treatment string and configured to move by fluid pressure within the inner bore of the fluid treatment string between (i) a first position in which the sliding sleeve covers the port and (ii) a second position in which the sliding sleeve exposes the port to the inner bore of the fluid treatment string; 
 
 applying a fluid pressure within the inner bore of the fluid treatment string such that the sliding sleeve moves from the first position to the second position without the sliding sleeve engaging a sealing device; 
 and pumping a fracturing fluid comprising proppants through the inner bore of the fluid treatment string, through the port, and into the formation to fracture a portion of the formation. 
 
     
     
       25. The method of  claim 24 , wherein the fluid treatment string comprises a tubing string. 
     
     
       26. The method of  claim 24 , wherein the fluid treatment string comprises a casing string.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.